Kohlhepp has already been charged with four counts of murder after his alleged confession. After those charges were filed, Spartanburg County Sheriff Chuck Wright told PEOPLE that “more charges are coming soon.”

The rescued woman — 30-year-old Kala Brown — was reported missing in late August, along with her boyfriend, Charlie Carver. Brown told police she watched Kohlhepp fatally shoot Carver; his body was found in a shallow grave on Kohlhepp’s land.

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Later, Kohlhepp allegedly led investigators to the grave sites of a missing couple, later identified as Meagan Coxie, 25, and Johnny Coxie, 29.

On Monday evening, the Spartanburg County Sheriff’s Office formally filed three additional counts of murder, charging Kohlhepp with killing Carver and the Coxies.

Kohlhepp was also charged Monday with unlawful weapons possession and with kidnapping Carver and the Coxies.

Kohlhepp is being held without bond and has not yet entered a plea. It is still unclear who his attorney is.